feat: resolve generalized field notation using all parents

[kmill]

• Now getPathToBaseStructure? can navigate to all parent structures, not just through subobjects.
• Adds a "resolution order" for methods. This is the order that generalized field notation visits parent structures when trying to resolve names. The algorithm to compute a resolution order is the commonly used C3 (used for instance by Python). By default we use a relaxed version of the algorithm that tolerates inconsistencies. Using set_option structure.strictResolutionOrder true makes inconsistent parent orderings into warnings.
• This makes generalized field notation be able to resolve names for all parent structures, not just those that are embedded as subobjects. Closes Dot notation resolution has counterintuitive behavior with diamond multiple inheritance  #3467. (And addresses side note in [RFC] record all parents structures in StructureInfo #1881.)
• Modifies getAllParentStructures to return all parents. This improves dot completion in the editor.

[leanprover-community-bot]

Mathlib CI status (docs):

• 💥 Mathlib branch lean-pr-testing-5770 build failed against this PR. (2024-10-19 09:33:13) View Log
• ❗ Batteries/Mathlib CI will not be attempted unless your PR branches off the nightly-with-mathlib branch. Try git rebase 4ee44ceb1d77f16b9b81bc655bc8b318cd6e8c4d --onto 9847923f9be5de968f10ed7c7493e3ca0072abce. (2024-10-29 02:24:06)
• 💥 Mathlib branch lean-pr-testing-5770 build failed against this PR. (2024-10-30 01:00:19) View Log
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• ✅ Mathlib branch lean-pr-testing-5770 has successfully built against this PR. (2024-10-31 16:41:18) View Log